April 2020 - Users - libvirt List Archives

Virsh migrate and paused vm
by Paras Pradhan 24 Apr '20

24 Apr '20

Hello I have a question regarding virsh migrate. I see this when I migrate a vm using the command --- virsh --connect=xen:///system migrate --live --verbose vm1 xen+ssh://node2/system --- I see the vm keeps running on node1 and on node2 its paused. Libvirt version is 5.1.0-8.11.6.x86_64 and hypervisor is Xen 4.12. No issues when running --- xl migrate vm1 node2 --- Any help is appreciated. Thanks P

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php libvirt show active snapshot
by Todd Lewis 21 Apr '20

21 Apr '20

Is php libvirt able to list the active snapshot for the vm? I can easily take snapshots and restore snapshots, but I can't figure out how to display the currently active snapshot using php libvirt. -- Todd Lewis Grizzly Star (469) 363-2907 Cell www.grizzlystar.com

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My VMs don't get IP with libvirt and dnsmasq
by Computers Issues 17 Apr '20

17 Apr '20

Hello there, I wanted to share a problem I'm having with libvirt, for the case someone here could know how to solve it. I'm using an Ubuntu 18.04 LTS, I have libvirtd already installed and I think I got all the dependencies installed. So, I'm using virsh net-create to create this network: <network> <name>pepito</name> <forward mode='nat'/> <bridge name='virbr2' stp='on' delay='0'/> <ip address='192.168.150.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.150.2' end='192.168.150.254'/> </dhcp> </ip> </network> And then I create a domain with this xml: <domain type='qemu' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <name>ARM</name> <memory unit='KiB'>262144</memory> <currentMemory unit='KiB'>262144</currentMemory> <os> <type arch='armv7l' machine='virt-2.9'>hvm</type> <kernel>~/zImage</kernel> <cmdline>console=ttyAMA0 root=/dev/vda</cmdline> <boot dev='hd'/> </os> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-system-aarch64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file=' ~/rootfs.qcow2'/> <target dev='hda' bus='virtio'/> </disk> <controller type='virtio-serial' index='0'> <address type='virtio-mmio'/> </controller> <interface type='network'> <mac address='52:54:00:09:a4:37'/> <model type='virtio'/> <source network='pepito'/> <address type='virtio-mmio'/> </interface> </devices> <qemu:commandline> <qemu:arg value='-device'/> <qemu:arg value='virtio-net-pci'/> <qemu:arg value='-netdev'/> <qemu:arg value='user,id=net1'/> </qemu:commandline> </domain> They both work as I created them in a different computer and everything works. But I'm trying it on my other Ubuntu machine, and once virsh creates the network and the domain, my VM never get an IP from that DHCP range. This is libvirtd log: abr 17 00:48:11 usuario-System-Product-Name dnsmasq-dhcp[13741]: DHCP, IP range 192.168.150.2 -- 192.168.150.254, lease time 1h abr 17 00:48:11 usuario-System-Product-Name dnsmasq-dhcp[13741]: DHCP, sockets bound exclusively to interface virbr2 abr 17 00:48:11 usuario-System-Product-Name dnsmasq[13741]: reading /etc/resolv.conf abr 17 00:48:11 usuario-System-Product-Name dnsmasq[13741]: using nameserver 127.0.0.53#53 abr 17 00:48:11 usuario-System-Product-Name dnsmasq[13741]: read /etc/hosts - 7 addresses abr 17 00:48:11 usuario-System-Product-Name dnsmasq[13741]: read /var/lib/libvirt/dnsmasq/pepito.addnhosts - 0 addresses abr 17 00:48:11 usuario-System-Product-Name dnsmasq-dhcp[13741]: read /var/lib/libvirt/dnsmasq/pepito.hostsfile Does anybody know why it could be that the VM never gets an IP from the range I defined? As I said, exactly the same configuration worked in a different machine, I don't know why it does not work here. Thank you so much!! <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Libre de virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

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Ovs error when starting vm: ovs-vsctl: 'del-port' command requires at least 1 arguments
by Thomas Pircher 17 Apr '20

17 Apr '20

Hi, my system got updated to libvirt 6.0.0 (from 5.6.0) this morning, and now I'm having problems starting VMs that make use of openvswitch portgroups. When I start a VM, I get this error message on virsh: > virsh # start testvm > error: Failed to start domain testvm > error: An error occurred, but the cause is unknown The system log contains: > Mar 30 09:45:39 tplinux ovs-vsctl[2763]: ovs|00001|db_ctl_base|ERR|'del-port' command requires at least 1 arguments > Mar 30 09:45:39 tplinux libvirtd[735]: internal error: Child process (ovs-vsctl --timeout=5 -- --if-exists del-port) unexpected exit status 1: ovs-vsctl: 'del-port' command requires at least 1 arguments > Mar 30 09:45:39 tplinux libvirtd[735]: internal error: Unable to delete port (null) from OVS My network "test-net" looks like: > <network> > <name>test-net</name> > <forward mode='bridge'/> > <bridge name='test-net'/> > <virtualport type='openvswitch'/> > <portgroup name='fabric' default='yes'> > <vlan trunk='yes'> > <tag id='10' nativeMode='untagged'/> > <tag id='20'/> > <tag id='30'/> > <tag id='40'/> > <tag id='50'/> > <tag id='60'/> > <tag id='70'/> > </vlan> > </portgroup> > </network> And the network in the domain xml file is: > <interface type='network'> > <mac address='01:23:45:67:89:ab'/> > <source network='test-net' portgroup='fabric'/> > <model type='e1000'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> > </interface> I didn't see any change in the changelog related to ovs or portgroups. Is there something I need to change in my VM definition? Thanks, Thomas

2 3

FYI: upstream bug reporting now using https://gitlab.com/libvirt
by Daniel P. Berrangé 16 Apr '20

16 Apr '20

In keeping with our general aim to consolidate libvirt project infrastructure services on GitLab, we now wish to have issues for upstream libvirt projects reported on the appropriate https://gitlab.com/libvirt/ repository issue tracker. For further details see: https://libvirt.org/bugs.html Bugs against OS distro provided binary packages should continue to be filed against the OS distros' own bug trackers unless the problem is known to also affect current upstream libvirt versions. Note that as part of this change, the "Virtualization Tools" component on bugzilla.redhat.com has been updated to remove the ability to file new bugs against libvirt related components. Existing bugs there still exist in bugzilla, but new bugs can only be filed against gitlab.com. Over time we hope to triage old bugs and close those that are either invalid, or those not likely to be addressed given current maintainer resources available. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|

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what a correct use for virConnectDomainEventRegisterAny API, how to Obtain a stable expected result
by thomas.kuang 16 Apr '20

16 Apr '20

HI, everyone: My target deal with network hotplug use virDomainDetachDeviceFlags. Because when the API return ,the network maybe doesn’t remove from my vm guest os. So I use virConnectDomainEventRegisterAny to register an event ID: VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED , my process as follow: cb_para->call_id=virConnectDomainEventRegisterAny(cb_para->conn,cb_para->dom,VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED, VIR_DOMAIN_EVENT_CALLBACK(vnf_control_del_network_cb), cb_para, vnf_control_del_network_cb_free); flags |= VIR_DOMAIN_AFFECT_CONFIG; if (virDomainIsActive(dom) == 1) { flags |= VIR_DOMAIN_AFFECT_LIVE; } ret = virDomainDetachDeviceFlags(dom, xml, flags); above code write in thread loop ,then in the same loop : while (1) { mission = vnf_mission_queue_get(task); if (mission == NULL) { sleep(1); continue; } vnf_op_process(&mission->info); // this will deal with network hotplug,will call virConnectDomainEventRegisterAny then call virDomainDetachDeviceFlags if (mission) { vnf_mission_free(mission); } if(virEventRunDefaultImpl() < 0) { // at here process the registered callback for event-registered printf();.... } } My problem is: some time , the virEventRunDefaultImpl can trigger the vnf_control_del_network_cb callback ,but some time there is nothing ,as if the VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED has lost. what cause the Unpredictable behavior ? what is a correct use for virConnectDomainEventRegisterAny ? if can't trigger the vnf_control_del_network_cb callback , the memory :cb_para will mem-leak, so in order to deal the execpt ,i register a timer to process the VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED timeout cb_para->timer_id = virEventAddTimeout(cb_para->time_out, vnf_control_del_network_timeout_cb, cb_para, vnf_control_del_network_cb_free); thought use the timer ,can i avoid the cb_para mem-leak, but fail to achive hotplug network .

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Connections Driver VirtualBox
by claudia freitas 14 Apr '20

14 Apr '20

Good Morning! My name is Cláudia, I'm trying to use the Connections to VirtualBox driver from libvirt.org on Pacemaker to start a virtual machine created with the VirtualBox hypervisor, so far I haven't been successful. Could you send me a practical example of how to use the driver with the VirtualDomain feature in Pacemaker? The examples I found only demonstrate the use with Xen and Qemu. Thanks,

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cloud-init libvirt
by PunkGeek 14 Apr '20

14 Apr '20

is there any way to use cloud-init configs in python libvirt? cloud-init require to create an iso, which seems that ovirt support cloud-config: https://red.ht/2K1gBkn But how can I do that by python libvirt? I know I can mount iso by python libvirt to the VM, but the process of creating iso file is the problem which if it is possible to enter the cloud-config commands by libvirt could be better to me. Regards

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Running libvirtd on windows
by Dhananjay Joshi 14 Apr '20

14 Apr '20

Hi I have downloaded virt-viewer package for windows 10 to run the libvirt framework on windows .When I try to run the virt-viewer facing the issue of not getting the libvirtd URI to connect as below: Any pointers on how to run libvirtd on windows would help... [cid:4d4f58c1-09b4-4ee8-9d66-a9ab91cf1cd2] This message contains information that may be privileged or confidential and is the property of the KPIT Technologies Ltd. It is intended only for the person to whom it is addressed. If you are not the intended recipient, you are not authorized to read, print, retain copy, disseminate, distribute, or use this message or any part thereof. If you receive this message in error, please notify the sender immediately and delete all copies of this message. KPIT Technologies Ltd. does not accept any liability for virus infected mails.

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python equivalent for virDomainGetGuestInfo()
by Joe Muro 09 Apr '20

09 Apr '20

Hi, I am using python apis. I can't seem to find equivalent python function for virDomainGetGuestInfo() https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainGetGuestInfo I have qemu-guest-agent running on the guest, and want to extract os information.

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